Spud for dredges.



UNITED STATES PATENT OFFICE.

GEORGE IV. KING, OF MARION, OHIO, ASSIGNOR TO THE MARION STEAM SHOVELOOMPANYQOF MARION, OHIO, A CORPORATION OF OHIO.

- SPUD FOR DREDGES.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application filed June 2,1906. Serial No. 319,953.

To all whom it may concern.-

Be it known that I, GEORGE IV. KING, a citizen of the United States,residing at Marion, in the county of Marion and State of Ohio, haveinvented certain new and useful Improvements in Spuds for Dredges, ofwhich the following is a specification, reference being had therein tothe'accompanying drawings.

This invention relates to spuds for dredges, and has for its object toprovide an improved construction of the spud and its guiding de vices,whereby their strength and durability are increased To these ends theinvention consists in cer tain novel features, which I will now proceedto describe and will then particularly point out in the claims.

In the accompanying drawings, Figure 1 is side elevation of the rear endof a dredge, showing the spuds in position. Fig; 2 is a plan section ofthe same. Fig. 3 is an enlarged side elevationof one of the spudsdetached. Fig. 4 is a front elevation of the same. Fig. 5 is a sectionalview of the same, taken on the line 00 a; of Fig. 3 and looking in thedirection of the arrows; and Fig. 6 is a similar view taken on the liney y of Fig. 3 and looking in the direction of the arrows.

In the said drawings, 173 represents the body of the hull and 174 thespuds at the rear of the hull, by means of which the dredge is anchoredin position. The body of each spud is in the form of a box-girder,comprising side plates 175 and front and back plates 176, which extendbeyond the side plates'and are secured thereto by angle-bars 177. Sincethese spuds are of considerable length, it is desirable to strengthentheir middle portion to enable them to resist the transverse strains towhich they are subjected, and I therefore provide along the centralportion of the interior of the girder a stiffening-plate 178, which issecured to the front and back plates by means of angle-bars 17 9. Byreason of this construction the required stiffness can be given to thebody of the spud while maintaining the uniform dimensions which arenecessary to permit it to properly fit and move in the spud-guides.These latter are shown at 180 arranged vertically in pairs at the backof the hull and provided along the margins of their opposite faces withwearing-plates 181. In order to give the spud a proper bearing 011 thesewearing-plates, it is provided with angle-irons 182, secured. to theangleirons 177 by one member and pre senting the other member to thecorresponding wearing-plate 18] so as to provide a wearing-surface tocooperate therewith without injury or cutting. This does away with thewooden filling heretofore used between the angle-bars 177 for thispurpose, which has always proved unsatisiactory.

I wish it to be understood that I do not desire to be limited to theexact details of construction shown and described, for obviousmodifications will occur to a person skilled in the art.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a dredge of the character described, a spud composed of abox-girder, and a stiffening-plate connecting the front and rear platesthereof along the central portion of the spud, substantially asdescribed.

2. In a dredge of the character described, a hull having spud-guidesprovided with wearing-plates along the margins of their opposite faces,in combination with a spud consisting of a box-girder with recessedsides, said spud having angle-bars secured thereto and presentingguiding-surfaces to cooperate with the wearing-plates of the guides,substan tially as described.

In testimony whereof I afliX my signature in presence of two witnesses.

GEORGE WV. KING.

I/Vitnesses:

ROBERT G. LUCAS, CARL T. BAUMAN.

